nixosTests.obs-studio: migrate to runTest (#399181)

nixos/tests/all-tests.nix

···
   nzbhydra2 = handleTest ./nzbhydra2.nix { };
   ocis = handleTest ./ocis.nix { };
   oddjobd = handleTestOn [ "x86_64-linux" "aarch64-linux" ] ./oddjobd.nix { };
-  obs-studio = handleTest ./obs-studio.nix { };
+  obs-studio = runTest ./obs-studio.nix;
   oh-my-zsh = handleTest ./oh-my-zsh.nix { };
   ollama = runTest ./ollama.nix;
   ollama-cuda = runTestOn [ "x86_64-linux" "aarch64-linux" ] ./ollama-cuda.nix;

nixos/tests/obs-studio.nix

···
-import ./make-test-python.nix (
-  { ... }:
+{ ... }:
 
-  {
-    name = "obs-studio";
+{
+  name = "obs-studio";
 
-    nodes.machine =
-      { pkgs, ... }:
-      {
-        imports = [
-          ./common/x11.nix
-          ./common/user-account.nix
-        ];
+  nodes.machine =
+    { pkgs, ... }:
+    {
+      imports = [
+        ./common/x11.nix
+        ./common/user-account.nix
+      ];
 
-        programs.obs-studio = {
-          enable = true;
-          plugins = with pkgs.obs-studio-plugins; [
-            wlrobs
-            obs-vkcapture
-          ];
-          enableVirtualCamera = true;
-        };
+      programs.obs-studio = {
+        enable = true;
+        plugins = with pkgs.obs-studio-plugins; [
+          wlrobs
+          obs-vkcapture
+        ];
+        enableVirtualCamera = true;
       };
+    };
 
-    testScript = ''
-      machine.wait_for_x()
-      machine.succeed("obs --version")
+  testScript = ''
+    machine.wait_for_x()
+    machine.succeed("obs --version")
 
-      # virtual camera tests
-      machine.succeed("lsmod | grep v4l2loopback")
-      machine.succeed("ls /dev/video1")
-      machine.succeed("obs --startvirtualcam >&2 &")
-      machine.wait_for_window("OBS")
-      machine.sleep(5)
+    # virtual camera tests
+    machine.succeed("lsmod | grep v4l2loopback")
+    machine.succeed("ls /dev/video1")
+    machine.succeed("obs --startvirtualcam >&2 &")
+    machine.wait_for_window("OBS")
+    machine.sleep(5)
 
-      # test plugins
-      machine.succeed("which obs-vkcapture")
-    '';
-  }
-)
+    # test plugins
+    machine.succeed("which obs-vkcapture")
+  '';
+}